Skip to main content

Table 3 Major Allergen Content of US Standardized Extracts*†

From: Update on Allergy Immunotherapy

Allergen Extract

Expressed Potency

Major Allergen

Mean Content (μg/mL)

Grasses

   

   Kentucky blue

100,000 BAU/mL

Poa p 5

262

   Timothy

100,000 BAU/mL

Phl p 5

743

   Orchard

100,000 BAU/mL

Dac g 5

918

   Fescue

100,000 BAU/mL

Fes p 5

152

   Rye

100,000 BAU/mL

Lol p 5

337

Short ragweed

1:10 w/v

Amb a I

268

 

‡1:20 w/v

Amb a I

89

 

§1:10 w/v

Amb a I

350-625

Mixed ragweed

1:10 w/v

Amb a I

174

Dermatophagoides pteronyssinus

10,000 AU/mL

Der p I

172

 

‡10,000 AU/mL

Der p I

78

 

‡30,000 AU/mL

Der p I

182

Dermatophagoides farinae

10,000 AU/mL

Der f I

44

 

‡10,000 AU/mL

Der f I

68

 

‡30,000 AU/mL

Der f I

293

Cat hair

10,000 BAU/mL

Fel d I

40

 

‡10,000 BAU/mL

Fel d I

60

 

§10,000 BAU/mL

Fel d I

40-80

Dog hair

1:10 w/v

Can f I

5.4

Acetone precipitated dog||

1:50 w/v

Can f I

189

  1. AU = allergy units; BAU = bioequivalent allergy units; w/v = weight per volume.
  2. *Sources of extracts: US Food and Drug Administration and extract laboratories.
  3. †Values provided by ALK-Abello, Inc, Wallingford, CT.
  4. ‡Hollister-Stier Laboratories, Spokane, WA.
  5. §Greer Laboratories, Lenoir, NC.
  6. ||Hollister-Stier Laboratories, Spokane, WA; now also available in 1:100 with similar Can f 1 values.